Contents

#include "pangram.h"
#include <string.h>
#include <ctype.h>

#define NUMBER_OF_LETTERS (26)

bool is_pangram(const char *sentence)
{
   size_t sentence_length = ((sentence == NULL) ? 0 : strlen(sentence));
   bool found_letters[NUMBER_OF_LETTERS];

   memset(found_letters, 0, sizeof(found_letters));

   for (size_t i = 0; i < sentence_length; i++) {
      char letter = tolower(sentence[i]);

      if (isalpha(letter)) {
         found_letters[letter - 'a'] = true;
      }
   }

   for (size_t i = 0; i < NUMBER_OF_LETTERS; i++) {
      if (!found_letters[i]) {
         return false;
      }
   }

   return true;
}

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.179	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.178	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.177	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.176	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.175	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.174	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.173	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.172	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.171	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.170	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.169	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.167	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.166	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.165	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.164	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.163	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.162	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.161	tracks/c/exercises/pangram/src/example.c
trackler-2.2.1.160	tracks/c/exercises/pangram/src/example.c